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//===- HLSLResource.cpp - HLSL Resource helper objects --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file This file contains helper objects for working with HLSL Resources.
///
//===----------------------------------------------------------------------===//
#include "llvm/Frontend/HLSL/HLSLResource.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
using namespace llvm;
using namespace llvm::hlsl;
GlobalVariable *FrontendResource::getGlobalVariable() {
return cast<GlobalVariable>(
cast<ConstantAsMetadata>(Entry->getOperand(0))->getValue());
}
StringRef FrontendResource::getSourceType() {
return cast<MDString>(Entry->getOperand(1))->getString();
}
ResourceKind FrontendResource::getResourceKind() {
return static_cast<ResourceKind>(
cast<ConstantInt>(
cast<ConstantAsMetadata>(Entry->getOperand(2))->getValue())
->getLimitedValue());
}
uint32_t FrontendResource::getResourceIndex() {
return cast<ConstantInt>(
cast<ConstantAsMetadata>(Entry->getOperand(3))->getValue())
->getLimitedValue();
}
uint32_t FrontendResource::getSpace() {
return cast<ConstantInt>(
cast<ConstantAsMetadata>(Entry->getOperand(4))->getValue())
->getLimitedValue();
}
FrontendResource::FrontendResource(GlobalVariable *GV, StringRef TypeStr,
ResourceKind RK, uint32_t ResIndex,
uint32_t Space) {
auto &Ctx = GV->getContext();
IRBuilder<> B(Ctx);
Entry = MDNode::get(
Ctx, {ValueAsMetadata::get(GV), MDString::get(Ctx, TypeStr),
ConstantAsMetadata::get(B.getInt32(static_cast<int>(RK))),
ConstantAsMetadata::get(B.getInt32(ResIndex)),
ConstantAsMetadata::get(B.getInt32(Space))});
}
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